Microsoft Team membership can be managed by the Owners of the Team.
Team Owners are able to add and remove Members using the Microsoft instructions found here: https://support.microsoft.com/en-us/office/add-members-to-a-team-in-teams-aff2249d-b456-4bc3-81e7-52327b6b38e9
See 'Related Articles' for additional information.
Submit a ticket using the Report Issue or Submit Request button.